Copying-pad



(No Model.)

L. BAILEY.

COPYING PAD.

No. 301,202. Patented July 1,1884.

N. PETERS. Plmmurhe n nen Washlnglou, n. c.

LEONARD BAILEY, OF HARTFORD, CONNECTICUT.

COPYING-PAD.

SPECIFICATION forming part of Letters PatentNo. 301,202, dated July 1,I884.

Application filed December 13, 1883. (No model.)

To all whom it may concern.-

Be it known that I, LEONARD BAILEY, of Hartford, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements in Copying-Pads; and I do hereby declare that the followingis a full, clear, and exact description thereof, whereby a personskilled in the art can make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

Like letters in the figures indicate the same parts.

Figure 1 is a plan view of one of my improved pads, the corner of one ofthe layers of cloth being turned back to show construction. Fig. 2 is aView. in crosssection of a part of same on enlarged scale 011 line :0 a:of Fig. 1. Fig. 3 is a diagram view illustrating a step in the processpreferably employed in makingthe pad.

In'the common method of copying letters by what may be called the wetprocess cloths and blotting-pads of more or less absorbent orwater-retaining material are used with sheets of water-proof material toprotect all but the page to receive the copy. More or less difficultyhas been experienced in the search for a copying-pad that will be of thedesired rigidity in large as well as small sheets, and at the same timeas cheap and convenient in use as the common material so long used, withgood absorbent qualities and durability. My improvement meets theserequirements; and it consists in a copying-pad made with a central layerof stiff paper or equivalent material of a good degree of tensilestrength, as well as stiffness, intimately connected withcovering-layers of textile or knitted fabric by means of rubber or othercement.

In the accompanying drawings, the letter a denotes a sheet of paper orequivalent material of considerable tensile strength, and of suchstiffness as will prevent it from wrinkling or becoming crumpled byhandling; 6, covering-layers of cloth, preferably stocki-net or similarknitted fabric, that are fastened to the central sheet by a thin layerof cement,

preferably rubber, the whole united by heat and pressure.

In making my improved pad, the cloth is first covered on one side withthe prepared rubber in a thin layer by passing the cloth and rubberbetween the'heated rolls of the press in the ordinary manner now commonin the art for such uses, and by another step the paper central sheet ispassed through the rolls between two sheets of the rubber-coated cloth,with the rubber side in cont-act with the paper, to which it is causedto adhereby theheat and pressure of 'the rolls, as illustrated in thediagram view in Fig. 3. This means of making the pads is the onepreferably employed by me as being the one giving most uniform results,and the most economical, the pads being cut from the sheets in anydesired sizes for use. Other methods and means may obviously be employedto produce the same re sult, the main feature of my improvement residingin the product.

In order to give'added strength to the pad, it may be made with thecloth covering-sheets overlapping the central stiffening-sheet andunited, as seen at b, along the edge of the pad, and this form has someadvantages. in preventing abrasion of the edges, I

In my improved pad the central stiffening sheet in the pad preserves thesheet-like form with but little added weight over cloths alone,- and theco'vering,whe1'1 of stockinet, furnishes a water-retaining material muchsofter than the common cloth, and, one that from its peculiar structureholds a greater amount of moisture and retains it while making a greaternumber of copies.

I am aware that pads have been made by variously uniting absorbent andwaterproofed material, and the pad as composed of a union of suchmaterial I do not broadly claim.

I claim as my invention 1. As a new article of manufacture, thecopying-pad composed of a central stiffeninglayer intimately united, asby rubber cement, with covering-layers of absorbent fabric, allsubstantially as described.

2. As a copying-pad, in combination, the central paper layer, a, withcovering-layers b, of stockinct, united to the central layer by adhesivematerial, and overlapping the central. rubber cement, the wholecompressed and layer and united, as by cement, along the edge IO unitedby heat and pressure, all substantially 0f the pad, all substantially asdescribed.

as described. c T T 3. In a copying-pad 0f the within-described LEOLARDBAILEK class, the central stiffening-layer, in combinaitnesses: tionwith the covering-layers 0f knitted or CHAS. L. BURDETT, textile fabric,united to the central layer by E. F. DIMOOIC

